Display screen with a graphical user interface



FIG. 1 is a front view of an embodiment of a display screen with a graphical user interface, showing our new design;

FIG. 2 is a front view of a second embodiment thereof; and,

FIG. 3 is a front view of a third embodiment thereof.

The display and subject matter shown in broken lines, including all text, forms no part of the claimed design. The broken line text showing in FIGS. 1-3 is for illustrative purposes only and forms no part of the claimed design. The outermost broken line perimeter shown in FIGS. 1-3 is included for the purpose of showing a portion of a display screen and forms no part of the claimed design. 

CLAIM The ornamental design for a display screen with a graphical user interface, as shown and described. 